Posey ties it, Belt wins it for Giants

April 22, 2013 10:52 PM

Photo: Carlos Avila Gonzalez/The Chronicle

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Brandon Belt, center, is mobbed by teammates after hitting a game-winning single that scored Andres Torres from second base in the bottom of the ninth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Brandon Belt, center, is mobbed by teammates after hitting a game-winning single that scored Andres Torres from second base in the bottom of the ninth inning. The San Francisco Giants played the Arizona ... more

Buster Posey hits a two-run home run in the bottom of the eighth inning to tie the game against the Diamondbacks. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Buster Posey hits a two-run home run in the bottom of the eighth inning to tie the game against the Diamondbacks. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., ... more

Photo: Carlos Avila Gonzalez, The Chronicle

Buster Posey hits a two-run home run in the bottom of the eighth... Photo-4513647.60870 - seattlepi.com

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Buster Posey rounds the bases after hitting a two-run home run in the bottom of the eighth inning to tie the game against the Diamondbacks. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Buster Posey rounds the bases after hitting a two-run home run in the bottom of the eighth inning to tie the game against the Diamondbacks. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park ... more

Photo: Carlos Avila Gonzalez, The Chronicle

Buster Posey rounds the bases after hitting a two-run home run in... Photo-4513648.60870 - seattlepi.com

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Third base coach Tim Flannery waits as Buster Posey rounds the bases after hitting a two-run home run in the bottom of the eighth inning to tie the game against the Diamondbacks. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt.

Third base coach Tim Flannery waits as Buster Posey rounds the bases after hitting a two-run home run in the bottom of the eighth inning to tie the game against the Diamondbacks. The San Francisco Giants played

Buster Posey high fives Hunter Pence after hitting a two-run home run in the bottom of the eighth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Buster Posey high fives Hunter Pence after hitting a two-run home run in the bottom of the eighth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on ... more

Ryan Vogelsong started the game for the Giants but did not get a decision. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Ryan Vogelsong started the game for the Giants but did not get a decision. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 ... more

Photo: Carlos Avila Gonzalez, The Chronicle

Ryan Vogelsong started the game for the Giants but did not get a... Photo-4513929.60870 - seattlepi.com

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Marco Scutaro can't get to a ball hit by Gerardo Parra in the first inning. Parra would later score in the inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Marco Scutaro can't get to a ball hit by Gerardo Parra in the first inning. Parra would later score in the inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., ... more

Photo: Carlos Avila Gonzalez, The Chronicle

Marco Scutaro can't get to a ball hit by Gerardo Parra in the... Photo-4513689.60870 - seattlepi.com

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Martin Prado chases down a ball hit by Marco Scutaro in the bottom of the first inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Martin Prado chases down a ball hit by Marco Scutaro in the bottom of the first inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, ... more

Photo: Carlos Avila Gonzalez, The Chronicle

Martin Prado chases down a ball hit by Marco Scutaro in the bottom... Photo-4513690.60870 - seattlepi.com

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Pablo Sandoval tips his cap to the dugout after hitting a double in the first inning that scored Marco Scutaro. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Pablo Sandoval tips his cap to the dugout after hitting a double in the first inning that scored Marco Scutaro. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on ... more

Photo: Carlos Avila Gonzalez, The Chronicle

Pablo Sandoval tips his cap to the dugout after hitting a double in... Photo-4513916.60870 - seattlepi.com

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Buster Posey watches his first inning double hit the wall in right center field. The hit would score Pablo Sandoval from second base. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Buster Posey watches his first inning double hit the wall in right center field. The hit would score Pablo Sandoval from second base. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San ... more

Pablo Sandoval pats Joaquin Arias on the head after scoring on a Buster Posey double in the first inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Pablo Sandoval pats Joaquin Arias on the head after scoring on a Buster Posey double in the first inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on ... more

Photo: Carlos Avila Gonzalez, The Chronicle

Pablo Sandoval pats Joaquin Arias on the head after scoring on a... Photo-4513894.60870 - seattlepi.com

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Marco Scutaro sticks his tongue out at Brandon Crawford in what appears to be a defensive signal as the Diamondbacks bat in the fifth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Marco Scutaro sticks his tongue out at Brandon Crawford in what appears to be a defensive signal as the Diamondbacks bat in the fifth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T ... more

Ryan Vogelsong calls for the trainer as Buster Posey reacts to being hit in the throat by a pitch that bounced up of the dirt and hit him under the mask in the fifth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Ryan Vogelsong calls for the trainer as Buster Posey reacts to being hit in the throat by a pitch that bounced up of the dirt and hit him under the mask in the fifth inning. The San Francisco Giants played the ... more

Arizona pitcher Wade Miley hits a solo homerun in the fifth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Arizona pitcher Wade Miley hits a solo homerun in the fifth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a ... more

Ryan Vogelson watches as Wade Miley rounds the bases after hitting a solo homerun in the 5th inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Ryan Vogelson watches as Wade Miley rounds the bases after hitting a solo homerun in the 5th inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, ... more

Andres Torres steals second as the ball gets away from Didi Gregorius in the fifth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Andres Torres steals second as the ball gets away from Didi Gregorius in the fifth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, ... more

Eric Chaves strikes out swinging in the ninth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Eric Chaves strikes out swinging in the ninth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by ... more

Brandon Crawford completes the double play on Didi Gregrorius in the sixth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Brandon Crawford completes the double play on Didi Gregrorius in the sixth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, ... more

Gerardo Parra caught stealing by Marco Scutaro in the seventh inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Gerardo Parra caught stealing by Marco Scutaro in the seventh inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a ... more

Cody Ross robs Buster Posey of a hit in the sixth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Cody Ross robs Buster Posey of a hit in the sixth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit ... more

Andres Torres hits a single to lead off the ninth inning, and scored on a single by Brandon Belt to win the game. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Andres Torres hits a single to lead off the ninth inning, and scored on a single by Brandon Belt to win the game. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., ... more

Photo: Carlos Avila Gonzalez, The Chronicle

Andres Torres hits a single to lead off the ninth inning, and... Photo-4513675.60870 - seattlepi.com

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Pablo Sandoval sticks his tongue out after striking out in the sixth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Pablo Sandoval sticks his tongue out after striking out in the sixth inning. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning ... more

Photo: Carlos Avila Gonzalez, The Chronicle

Pablo Sandoval sticks his tongue out after striking out in the... Photo-4513927.60870 - seattlepi.com

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Brandon Belt watches his game-winning hit go into center field that would score Andres Torres from second in the bottom of the ninth. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San Francisco, Calif., on Monday, April 22, 2013, winning 5-4 on a walk-off hit by Brandon Belt. less

Brandon Belt watches his game-winning hit go into center field that would score Andres Torres from second in the bottom of the ninth. The San Francisco Giants played the Arizona Diamondbacks at AT&T Park in San ... more